AMMCO 7900 Twin Cutter Tool - Manual (Page 5)

AMMCO 7900 Twin Cutter Tool • 5
14. Turn the end knob of each tool bar micrometer,
individually, to set each tool bit to the desired depth-
of-cut. Remove only enough material to clean up each
side.
15. Engage the automatic cross feed to begin the
cut.
16. When the tool bits have cleared the rotor, dis-
engage the cross feed and turn the lathe off to inspect
both surfaces.
17. If part of the brake surface was not cut, leave
the tool bars locked in position. Turn the lathe on.
Slowly turn the cross feed handwheel clockwise until
the outer tool bit reaches the groove at the rotor hub.
Repeat steps 14, 15, 16, and 17.
Tool Bar Adjustment
1. Turn the micrometer dial couterclockwise to
unscrew the dial from the boring bar. Remove the
micrometer dial assembly.
2. Unscrew the two (2) allen head cap screws from
the tool holder against a solid stop, pull the screws
from the boring bar and carefully ease the bar away
from the stop.
3. Clean all metal chips and dirty grease from all the
working parts.
4. Slip the spring into the bore of the tool bar.
Grease the sleeve with white grease and slip it into
the bore of the tool bar.
5. Slip the tool holder between the ears of the bor-
ing bar, press the tool holder against a solid stop and
insert the allen head cap screws. Run the screws all
the way in.
6. Insert the micrometer dial assembly into the tool
bar and screw the micrometer all the way in.
7. Fully tighten one (1) of the allen head cap screws,
then back the micrometer dial out two (2) turns.
8. Slowly loosen the allen head cap screw until the
tool holder slips back.
9. Screw the micrometer all the way in and repeat
steps 7 and 8 for the other allen head cap screw.
Twin Cutter Tool